summaryrefslogtreecommitdiff
path: root/gfx-iso/demo
diff options
context:
space:
mode:
Diffstat (limited to 'gfx-iso/demo')
-rw-r--r--gfx-iso/demo/isogfx-demo.c213
1 files changed, 0 insertions, 213 deletions
diff --git a/gfx-iso/demo/isogfx-demo.c b/gfx-iso/demo/isogfx-demo.c
deleted file mode 100644
index d6c1ab0..0000000
--- a/gfx-iso/demo/isogfx-demo.c
+++ /dev/null
@@ -1,213 +0,0 @@
1#include <isogfx/isogfx.h>
2
3#include <gfx/gfx.h>
4#include <gfx/gfx_app.h>
5#include <gfx/render_backend.h>
6#include <gfx/renderer.h>
7#include <gfx/scene.h>
8#include <gfx/util/geometry.h>
9#include <gfx/util/shader.h>
10
11#include <assert.h>
12#include <stdbool.h>
13#include <stdio.h>
14#include <stdlib.h>
15
16static const int SCREEN_WIDTH = 1408;
17static const int SCREEN_HEIGHT = 960;
18static const int TILE_WIDTH = 64;
19static const int TILE_HEIGHT = TILE_WIDTH / 2;
20static const int WORLD_WIDTH = 20;
21static const int WORLD_HEIGHT = 20;
22
23static const Pixel BLACK = (Pixel){.r = 0x38, .g = 0x3b, .b = 0x46};
24static const Pixel WHITE = (Pixel){.r = 0xA5, .g = 0xb3, .b = 0xc0};
25static const Pixel RED = (Pixel){.r = 0xdc, .g = 0x76, .b = 0x84};
26
27typedef struct State {
28 Gfx* gfx;
29 IsoGfx* iso;
30 Tile red;
31 int xpick;
32 int ypick;
33 Texture* screen_texture;
34 Scene* scene;
35} State;
36
37static void make_checkerboard(IsoGfx* iso, Tile black, Tile white) {
38 assert(iso);
39 for (int y = 0; y < isogfx_world_height(iso); ++y) {
40 for (int x = 0; x < isogfx_world_width(iso); ++x) {
41 const int odd_col = x & 1;
42 const int odd_row = y & 1;
43 const Tile value = (odd_row ^ odd_col) == 0 ? black : white;
44 isogfx_set_tile(iso, x, y, value);
45 }
46 }
47}
48
49static bool init(const GfxAppDesc* desc, void** app_state) {
50 State* state = calloc(1, sizeof(State));
51 if (!state) {
52 return false;
53 }
54
55 if (!(state->iso = isogfx_new(&(IsoGfxDesc){
56 .screen_width = SCREEN_WIDTH,
57 .screen_height = SCREEN_HEIGHT,
58 .tile_width = TILE_WIDTH,
59 .tile_height = TILE_HEIGHT,
60 .world_width = WORLD_WIDTH,
61 .world_height = WORLD_HEIGHT}))) {
62 goto cleanup;
63 }
64 if (!(state->gfx = gfx_init())) {
65 goto cleanup;
66 }
67 RenderBackend* render_backend = gfx_get_render_backend(state->gfx);
68
69 if (!(state->screen_texture = gfx_make_texture(
70 render_backend, &(TextureDesc){
71 .width = SCREEN_WIDTH,
72 .height = SCREEN_HEIGHT,
73 .dimension = Texture2D,
74 .format = TextureRGB8,
75 .filtering = NearestFiltering,
76 .wrap = ClampToEdge,
77 .mipmaps = false}))) {
78 goto cleanup;
79 }
80
81 ShaderProgram* shader = gfx_make_view_texture_shader(render_backend);
82 if (!shader) {
83 goto cleanup;
84 }
85
86 Geometry* geometry = gfx_make_quad_11(render_backend);
87 if (!geometry) {
88 goto cleanup;
89 }
90
91 MaterialDesc material_desc = (MaterialDesc){.num_uniforms = 1};
92 material_desc.uniforms[0] = (ShaderUniform){
93 .type = UniformTexture,
94 .value.texture = state->screen_texture,
95 .name = sstring_make("Texture")};
96 Material* material = gfx_make_material(&material_desc);
97 if (!material) {
98 return false;
99 }
100
101 const MeshDesc mesh_desc =
102 (MeshDesc){.geometry = geometry, .material = material, .shader = shader};
103 Mesh* mesh = gfx_make_mesh(&mesh_desc);
104 if (!mesh) {
105 goto cleanup;
106 }
107
108 SceneObject* object = gfx_make_object();
109 if (!object) {
110 goto cleanup;
111 }
112 gfx_add_object_mesh(object, mesh);
113
114 state->scene = gfx_make_scene();
115 SceneNode* node = gfx_make_object_node(object);
116 SceneNode* root = gfx_get_scene_root(state->scene);
117 gfx_set_node_parent(node, root);
118
119 const Tile black = isogfx_make_tile(
120 state->iso, &(TileDesc){.type = TileFromColour, .colour = BLACK});
121 const Tile white = isogfx_make_tile(
122 state->iso, &(TileDesc){.type = TileFromColour, .colour = WHITE});
123 state->red = isogfx_make_tile(
124 state->iso, &(TileDesc){.type = TileFromColour, .colour = RED});
125 make_checkerboard(state->iso, black, white);
126 isogfx_render(state->iso);
127
128 *app_state = state;
129 return true;
130
131cleanup:
132 if (state->gfx) {
133 gfx_destroy(&state->gfx);
134 }
135 free(state);
136 return false;
137}
138
139static void shutdown(void* app_state) {
140 assert(app_state);
141 State* state = (State*)(app_state);
142 isogfx_del(&state->iso);
143 gfx_destroy(&state->gfx);
144 free(app_state);
145}
146
147static void update(void* app_state, double t, double dt) {
148 assert(app_state);
149 State* state = (State*)(app_state);
150
151 double mouse_x, mouse_y;
152 gfx_app_get_mouse_position(&mouse_x, &mouse_y);
153
154 isogfx_pick_tile(state->iso, mouse_x, mouse_y, &state->xpick, &state->ypick);
155
156 printf("Picked tile: (%d, %d)\n", state->xpick, state->ypick);
157}
158
159static void render(void* app_state) {
160 assert(app_state);
161 State* state = (State*)(app_state);
162
163 isogfx_render(state->iso);
164 if ((state->xpick != -1) && (state->ypick != -1)) {
165 isogfx_draw_tile(state->iso, state->xpick, state->ypick, state->red);
166 }
167
168 const Pixel* screen = isogfx_get_screen_buffer(state->iso);
169 assert(screen);
170 gfx_update_texture(
171 state->screen_texture, &(TextureDataDesc){.pixels = screen});
172
173 RenderBackend* render_backend = gfx_get_render_backend(state->gfx);
174 Renderer* renderer = gfx_get_renderer(state->gfx);
175
176 gfx_start_frame(render_backend);
177 gfx_render_scene(
178 renderer, &(RenderSceneParams){
179 .mode = RenderDefault, .scene = state->scene, .camera = 0});
180 gfx_end_frame(render_backend);
181}
182
183static void resize(void* app_state, int width, int height) {
184 assert(app_state);
185 State* state = (State*)(app_state);
186
187 RenderBackend* render_backend = gfx_get_render_backend(state->gfx);
188 gfx_set_viewport(render_backend, width, height);
189}
190
191int main(int argc, const char** argv) {
192 const int initial_width = SCREEN_WIDTH;
193 const int initial_height = SCREEN_HEIGHT;
194 const int max_fps = 60;
195
196 gfx_app_run(
197 &(GfxAppDesc){
198 .argc = argc,
199 .argv = argv,
200 .width = initial_width,
201 .height = initial_height,
202 .max_fps = max_fps,
203 .update_delta_time = max_fps > 0 ? 1.0 / (double)max_fps : 0.0,
204 .title = "Isometric Renderer"},
205 &(GfxAppCallbacks){
206 .init = init,
207 .update = update,
208 .render = render,
209 .resize = resize,
210 .shutdown = shutdown});
211
212 return 0;
213}
generated by cgit v1.2.3 (git 2.25.1) at 2024-12-27 23:03:49 +0000